2.3.4 代码质量：日志记录：使用系统输出流

license/src/main/java/iot/sixiang/license/xss/XSSFilterConfig.java

 package iot.sixiang.license.xss;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.web.servlet.FilterRegistrationBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -11,12 +12,13 @@ import org.springframework.context.annotation.DependsOn;
  * @Description
  */
 @Configuration
+@Slf4j
 public class XSSFilterConfig {
 
     @Bean
     @DependsOn("xssFilter")
     public FilterRegistrationBean filterRegistrationBean() {
-        System.out.println("===================filterRegistrationBean");
+        log.info("===================filterRegistrationBean");
         FilterRegistrationBean registration = new FilterRegistrationBean();
         registration.setFilter(new XssFilter());
         registration.addUrlPatterns("/*");